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run code in 150+ php & hhvm versions
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<?php $n = 1000000; // First a test with a empty array $array = array(); $time_start = microtime(true); $i = 0; while($i < $n) { $devnull = isset($array[++$i]); } $time_end = microtime(true); $time_while1= $time_end-$time_start; echo number_format($time_while1, 3, '.', '') ." seconds - isset(array[i]) on empty array \n";
Output for 7.1.0
0.027 seconds - isset(array[i]) on empty array
Output for 7.0.0, 7.0.14
0.020 seconds - isset(array[i]) on empty array
Output for 7.0.4, 7.0.6
0.022 seconds - isset(array[i]) on empty array
Output for 7.0.5
0.019 seconds - isset(array[i]) on empty array
Output for 7.0.3
0.017 seconds - isset(array[i]) on empty array
Output for 7.0.2
0.021 seconds - isset(array[i]) on empty array
Output for 7.0.1
0.016 seconds - isset(array[i]) on empty array
Output for 5.3.1, 5.3.4, 5.3.7 - 5.3.8, 5.3.10, 5.3.23, 5.6.16, 5.6.21 - 5.6.28
0.044 seconds - isset(array[i]) on empty array
Output for 5.4.6 - 5.4.7, 5.4.9, 5.4.20, 5.4.22 - 5.4.23, 5.4.29 - 5.4.30, 5.6.17, 5.6.20
0.032 seconds - isset(array[i]) on empty array
Output for 5.4.5, 5.4.16, 5.4.24 - 5.4.27, 5.4.32, 5.6.19
0.034 seconds - isset(array[i]) on empty array
Output for 5.5.24, 5.5.26, 5.5.30, 5.6.9 - 5.6.10, 5.6.18
0.035 seconds - isset(array[i]) on empty array
Output for 5.3.14, 5.3.16 - 5.3.18, 5.3.21 - 5.3.22, 5.3.27 - 5.3.28, 5.5.25, 5.6.15
0.043 seconds - isset(array[i]) on empty array
Output for 5.6.14
0.036 seconds - isset(array[i]) on empty array
Output for 5.4.2 - 5.4.3, 5.4.11, 5.6.8, 5.6.11, 5.6.13
0.037 seconds - isset(array[i]) on empty array
Output for 5.4.18, 5.4.42, 5.5.34, 5.6.12
0.041 seconds - isset(array[i]) on empty array
Output for 5.3.19 - 5.3.20, 5.5.29, 5.5.33, 5.5.35
0.042 seconds - isset(array[i]) on empty array
Output for 5.4.0, 5.4.8, 5.4.12 - 5.4.13, 5.4.15, 5.4.28, 5.4.31, 5.5.32
0.033 seconds - isset(array[i]) on empty array
Output for 5.5.27, 5.5.31
0.029 seconds - isset(array[i]) on empty array
Output for 5.4.1, 5.5.28
0.038 seconds - isset(array[i]) on empty array
Output for 5.4.45
0.053 seconds - isset(array[i]) on empty array
Output for 5.4.44
0.115 seconds - isset(array[i]) on empty array
Output for 5.4.40, 5.4.43
0.030 seconds - isset(array[i]) on empty array
Output for 5.4.41
0.146 seconds - isset(array[i]) on empty array
Output for 5.4.39
0.040 seconds - isset(array[i]) on empty array
Output for 5.4.10, 5.4.38
0.049 seconds - isset(array[i]) on empty array
Output for 5.3.12, 5.4.37
0.061 seconds - isset(array[i]) on empty array
Output for 5.2.3, 5.2.5, 5.2.14, 5.2.17, 5.4.36
0.064 seconds - isset(array[i]) on empty array
Output for 5.3.3, 5.3.5 - 5.3.6, 5.3.15, 5.3.25, 5.3.29, 5.4.35
0.045 seconds - isset(array[i]) on empty array
Output for 5.2.2, 5.4.34
0.067 seconds - isset(array[i]) on empty array
Output for 5.4.21
0.039 seconds - isset(array[i]) on empty array
Output for 5.3.0, 5.3.9, 5.4.19
0.046 seconds - isset(array[i]) on empty array
Output for 5.4.17
0.057 seconds - isset(array[i]) on empty array
Output for 5.4.14
0.055 seconds - isset(array[i]) on empty array
Output for 5.4.4
0.031 seconds - isset(array[i]) on empty array
Output for 5.3.26
0.048 seconds - isset(array[i]) on empty array
Output for 5.3.24
0.050 seconds - isset(array[i]) on empty array
Output for 5.3.2, 5.3.13
0.059 seconds - isset(array[i]) on empty array
Output for 5.1.0 - 5.1.1, 5.2.16, 5.3.11
0.068 seconds - isset(array[i]) on empty array
Output for 5.2.7, 5.2.15
0.069 seconds - isset(array[i]) on empty array
Output for 5.1.2, 5.2.13
0.065 seconds - isset(array[i]) on empty array
Output for 5.1.4, 5.2.0, 5.2.12
0.071 seconds - isset(array[i]) on empty array
Output for 5.2.10 - 5.2.11
0.066 seconds - isset(array[i]) on empty array
Output for 5.2.9
0.063 seconds - isset(array[i]) on empty array
Output for 5.2.4, 5.2.8
0.070 seconds - isset(array[i]) on empty array
Output for 5.2.1, 5.2.6
0.062 seconds - isset(array[i]) on empty array
Output for 5.1.6
0.089 seconds - isset(array[i]) on empty array
Output for 5.1.5
0.072 seconds - isset(array[i]) on empty array
Output for 5.1.3
0.084 seconds - isset(array[i]) on empty array
Output for 5.0.5
0.248 seconds - isset(array[i]) on empty array
Output for 4.3.2, 5.0.4
0.263 seconds - isset(array[i]) on empty array
Output for 5.0.3
0.223 seconds - isset(array[i]) on empty array
Output for 4.4.6, 5.0.2
0.250 seconds - isset(array[i]) on empty array
Output for 5.0.1
0.266 seconds - isset(array[i]) on empty array
Output for 4.4.9 - 5.0.0
0.264 seconds - isset(array[i]) on empty array
Output for 4.4.8
-0.728 seconds - isset(array[i]) on empty array
Output for 4.4.7
0.259 seconds - isset(array[i]) on empty array
Output for 4.4.5
0.281 seconds - isset(array[i]) on empty array
Output for 4.4.4
-0.729 seconds - isset(array[i]) on empty array
Output for 4.4.3
0.285 seconds - isset(array[i]) on empty array
Output for 4.4.2
0.261 seconds - isset(array[i]) on empty array
Output for 4.4.1
-0.725 seconds - isset(array[i]) on empty array
Output for 4.4.0
0.274 seconds - isset(array[i]) on empty array
Output for 4.3.9, 4.3.11
0.284 seconds - isset(array[i]) on empty array
Output for 4.3.10
0.252 seconds - isset(array[i]) on empty array
Output for 4.3.8
0.257 seconds - isset(array[i]) on empty array
Output for 4.3.7
0.262 seconds - isset(array[i]) on empty array
Output for 4.3.6
-0.733 seconds - isset(array[i]) on empty array
Output for 4.3.5
0.269 seconds - isset(array[i]) on empty array
Output for 4.3.4
0.270 seconds - isset(array[i]) on empty array
Output for 4.3.3
-0.719 seconds - isset(array[i]) on empty array
Output for 4.3.1
0.251 seconds - isset(array[i]) on empty array
Output for 4.3.0
-0.450 seconds - isset(array[i]) on empty array